<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops" xml:lang="zh-CN">

<head>
  <title>Cover</title>
  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1" />
  <style>
    *,html,body{margin: 0;padding: 0;}
    html,body{width:100%;height:100%;}
    body{
      background-image:url(../img/pic2.jpg);
      background-size:contain;
      background-repeat:no-repeat;
      background-position:center center;
      }
  </style>
</head>

<body>
  <br />
</body>

</html>